to make hollow by removing the inner part, make a hole or cavity in; form into a hollow, as by digging: the ground was excavated for a foundation. Dictionary.com
Excavation can be very harmful to the environment as it cuts down trees. Machinery is also used for excavation, letting fossil fuels into the air. Bio-fuels are better to use for this machinery
-Jack: bottles, cardboard and toothpicks, foil - Jack W: anything (unknown) - Patrick: cardboard , straws, bottles, cereal boxes, orange juice bottles - Kendall: paddle pop sticks, cardboard - Cherliyn: anything
The meaning of Excavating
to make hollow by removing the inner part, make a hole or cavity in; form into a hollow, as by digging: the ground was excavated for a foundation.
Dictionary.com
Excavation can be very harmful to the environment as it cuts down trees. Machinery is also used for excavation, letting fossil fuels into the air. Bio-fuels are better to use for this machinery
-Jack: bottles, cardboard and toothpicks, foil
- Jack W: anything (unknown)
- Patrick: cardboard , straws, bottles, cereal boxes, orange juice bottles
- Kendall: paddle pop sticks, cardboard
- Cherliyn: anything